/**
 * Classify whether a client error should be reported to Sentry (unexpected)
 * vs domain/expected HTTP failures (logger only / breadcrumbs).
 */
/**
 * Returns true when the error should be captured by Sentry (5xx, network, unknown).
 * Returns false for domain 4xx with errorCode, validation errors, and 409 conflicts.
 */
export declare function isUnexpectedClientError(error: unknown): boolean;
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